Forget the competition onstage tonight at the Golden Globes — the real battle is going on behind the scenes for high-end jewelry brands to get movie stars like Anne Hathaway and Jennifer Lawrence to don millions in pricey baubles, with some actresses being paid $750,000 to wear their gems.

“This is the industry’s dirty little secret,” said a jewelry insider of the vast sums luxury brands fork over to coax stars to wear their pieces on the red carpet. “There are hundreds of thousands of dollars spent. It’s really aggressive.”

According to the source, Lawrence — who was dripping in 38 carats of Chopard diamonds at the Critics’ Choice Movie Awards last week and has previously worn the brand’s jewels at the Oscars and Globes — is getting $100,000 from Chopard to wear its goods at tonight’s ceremony.

We further hear Bulgari is shelling out $500,000 for stars, including Julianne Moore, to walk the red carpet in the brand’s looks.

“No one wants to talk about the payments and gifts,” said a source, adding that the money the stars receive during awards season is separate from any ad campaigns they are paid for and they sometimes get to keep the gems.

Hathaway reportedly was paid $750,000 by Tiffany & Co. when she co-hosted the Oscars. Gwyneth Paltrow has also been a hot ticket, sources say. She’s reportedly gotten $500,000 from Louis Vuitton for her Oscars look. But a rep for Hathaway and Paltrow denied reports of the big bucks.

A source close to the stars added: “Those numbers are completely fabricated, as is much of what’s in the weekly tabloids.” Another said of any payments: “You can’t blame the actresses . . . It’s a nice way for the girls to make a buck.”

Stylists, however, are not always fans of the trend because “it limits a stylist’s creativity — and it’s not always in the best interest of the gown their client is wearing.”

Reps for Lawrence, Bulgari and Chopard did not return requests for comment.